diff --git a/Makefile b/Makefile
index 0855136..f2985d7 100644
--- a/Makefile
+++ b/Makefile
@@ -222,11 +222,7 @@ NONTEST_PROG_SRC     := programs/gzip.c
 TEST_PROG_COMMON_SRC := programs/test_util.c
 TEST_PROG_SRC        := programs/benchmark.c \
 			programs/checksum.c \
-			programs/test_checksums.c \
-			programs/test_custom_malloc.c \
-			programs/test_incomplete_codes.c \
-			programs/test_slow_decompression.c \
-			programs/test_trailing_bytes.c
+			$(filter-out $(TEST_PROG_COMMON_SRC),$(wildcard programs/test_*.c))
 
 NONTEST_PROGRAMS := $(NONTEST_PROG_SRC:programs/%.c=%$(PROG_SUFFIX))
 DEFAULT_TARGETS  += $(NONTEST_PROGRAMS)